<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
    <script>
        let objA={
            name:"xixi",
            age:"haha"
        }    
        let objB=objA;
        console.log(objA===objB)//true
        // 引用类型  赋值相当于 传址  
        objB.name="haha";
        console.log(objA.name+'-----'+objB.name)//haha-----haha
        
    </script>
</body>
</html>